Enhancement occurs distal to a structure with what characteristic?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Sharpen your skills for the Davies Publishing SPI Test with targeted flashcards and multiple-choice questions, complete with hints and clarifications. Prepare thoroughly for success!

Multiple Choice

Enhancement occurs distal to a structure with what characteristic?

Explanation:
Posterior acoustic enhancement happens because the ultrasound beam loses less energy passing through a region that attenuates the sound less than surrounding tissue. Fluid-filled structures, like cysts, have low attenuation, so more sound energy reaches and then reflects from deeper tissues, making the area behind the structure appear brighter. If attenuation were greater, you’d see shadowing behind the structure instead of enhancement. If attenuation were similar or variable, there wouldn’t be a consistent brightening behind the structure.

Posterior acoustic enhancement happens because the ultrasound beam loses less energy passing through a region that attenuates the sound less than surrounding tissue. Fluid-filled structures, like cysts, have low attenuation, so more sound energy reaches and then reflects from deeper tissues, making the area behind the structure appear brighter. If attenuation were greater, you’d see shadowing behind the structure instead of enhancement. If attenuation were similar or variable, there wouldn’t be a consistent brightening behind the structure.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy